Method for removing copper ions from insulating oil of electrical equipment

A technology for insulating oil and copper ions, which is applied in separation methods, chemical instruments and methods, solid adsorbent liquid separation, etc. It can solve the problems of insulating oil containing large copper ions, copper ions cannot be effectively removed, and copper ion content rises, etc. Achieve obvious economic and social benefits, save resource consumption, and increase interfacial tension

Inactive Publication Date: 2012-08-08
STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +2
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes accidents such as insulation resistance drop or even flashover
However, in the prior art, the oil change method is usually used to solve the problem of a large amount of copper ions in the insulating oil, which not only costs a lot of money, but also affects environmental protection.
At the same time, since the long-term accumulated copper ions in electrical equipment cannot be effectively removed, the copper ion content will increase significantly after the transformer is operated after oil change

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1), backup adsorbent alumina by 3% of the total weight of insulating oil;

[0018] (2) Calcining the adsorbent prepared in the activation step (1) using a conventional method at a calcination temperature of 300 to 1000° C.;

[0019] (3) Prepare one oil pump, one heater, one adsorption tank, one filter and one middle tank, and use conventional methods to connect the transformer oil tank where the insulating oil in step (1) is located with the prepared oil pump, heater, The adsorption tank, the filter and the intermediate tank are connected in series, wherein the input port of the adsorption tank is located at the lower part of the adsorption tank, and the output port of the adsorption tank is located at the upper part of the adsorption tank;

[0020] (4), the adsorbent obtained in step (2) through the calcined activation treatment is added in the adsorption tank prepared by step (3) in 2 times, and the interval between the second addition time and the first addition tim...

Embodiment 2

[0024] (1), backup aluminum oxide, silicon oxide, lanthanum oxide, activated clay, and silicon-aluminum polymer five adsorbents by equal weight of 5% of the total weight of insulating oil;

[0025] Steps (2)~(3) are the same as in Example 1;

[0026] (4), the adsorbent obtained in step (2) through the calcined activation treatment is added in the adsorption tank prepared by step (3) in 3 times, with an interval of 72 hours;

[0027] (5) Open the valve at the output port at the bottom of the transformer oil tank, the valve at the upper output port of the adsorption tank, and start the filter in sequence, until the inflow of insulating oil in the intermediate tank reaches half of the capacity of the intermediate tank At the same time, open the valve of the output port at the bottom of the intermediate tank and the valve at the upper output port of the transformer oil tank, and implement the copper ion removal process to the insulating oil. During the copper ion removal process, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for removing copper ions from insulating oil of electrical equipment. The method comprises the following steps of: 1-, preparing adsorbent aluminum oxide, silicon oxide, lanthanum oxide, activated clay and silicon-aluminum polymer; 2-, calcining and activating the adsorbent; 3-, preparing an oil pump, a heater, an adsorption tank, a filter and an intermediate tank and connecting pipelines in series; 4-, adding the adsorbent to the adsorption tank; 5-, removing the copper ions from the insulating oil; and 6-, measuring. If the dielectric loss of the oil is reduced under 0.5 percent, and the content of the copper ions is reduced under 0.5mg / kg, treatment is ended, and otherwise, the treatment continues. According to the method, online circulation treatment is performed on the insulating oil by adopting an adsorption method, and thereby, transformer oil is recycled during the operation, and the waste oil emission and the consumption of the novel transformer oil are reduced. After the insulating oil is treated, the environment is favorably protected, the resource consumption is saved, and the economic benefit and the social benefit are obvious.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and environmental protection, and in particular relates to a method for removing copper ions from insulating oil of electrical equipment. Background technique [0002] Mineral insulating oil used for insulation of electrical equipment such as transformers, transformers, and circuit breakers is a product refined from petroleum containing direct alkanes, cycloalkanes, and aromatics. It has the functions of heat dissipation, arc extinguishing, and information carrier. However, when the insulating oil contains corrosive sulfur, the copper ion content in the insulating oil will increase. The reaction mechanism is: copper is first oxidized in oil to form Cu 2 O (cuprous oxide), then mercaptan (Mercaptan) and copper (Copper) oxides react to form copper mercaptan (Copper Mercaptan), and copper mercaptan decomposes under certain conditions to produce Cu 2 S (cuprous sulfide), copper thiol decomp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/00
Inventor 钱晖万涛胡旭冯兵龚尚昆
Owner STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap